Horkelia cuneata var. sericea
Common Name: Kellogg's horkelia
Family: Rosaceae
Synonyms: Horkelia cuneata ssp. sericea
Element Code: PDROS0W043
Full Name: Horkelia cuneata Lindl. var. sericea (A. Gray) Ertter & Reveal

1995 Saint Mary's College of California
Biology Glossary
  • Lifeform: perennial herb
  • Blooming Period: April - September
  • Habitat: sandy or gravelly, openings.
    • Closed-cone coniferous forest
    • Chaparral (maritime)
    • Coastal dunes
    • Coastal scrub
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 58
  • Element Occurrence Ranks:
    A B C D X U
    0 2 1 0 3 52
  • Population Status:
    >20 yrs
    <=20 yrs
    45 13
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    55 3 0
Notes Glossary
  • Threatened by coastal development. Historical occurrences need field surveys. Occurrence from the Crocker Hills probably last remaining location in S.F. Bay; remaining plants less distinct from ssp. cuneata than those formerly occurring near San Francisco. See Novon 17(3):315-325 (2007) for revised nomenclature.
  • To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
  • Date Added: 1988-01-01
  • Last Update: 2012-05-30
Location Glossary
  • Elevation: 10 - 200 meters
  • California Endemic: yes
  • States: California
  • California Counties and Islands:   name (code)
    Alameda (ALA) *,  Monterey (MNT),  Marin (MRN) *,  Santa Barbara (SBA),  Santa Cruz (SCR),  San Francisco (SFO) *,  San Luis Obispo (SLO),  San Mateo (SMT)
  • Quads:   name (DWR code) USGS code
    Point Conception (145B) 34120D4,  Lompoc (170B)* 34120F4,  Surf (171A) 34120F5,  Tranquillon Mtn. (171D) 34120E5,  Guadalupe (196A)* 34120H5,  Point Sal (196B)* 34120H6,  Casmalia (196D)* 34120G5,  Nipomo (220C) 35120A4,  Oceano (221D) 35120A5,  Morro Bay South (247D)* 35120C7,  Cambria (271D) 35121E1,  San Miguel (293C) 35120G6,  Salinas (365B) 36121F6,  Spreckels (365C) 36121E6,  Marina (366A) 36121F7,  Monterey (366C)* 36121E8,  Seaside (366D) 36121E7,  Prunedale (386C)* 36121G6,  Watsonville West (387A) 36121H7,  Soquel (387B)* 36121H8,  Davenport (408C) 37122A2,  Felton (408D) 37122A1,  Ano Nuevo (409D) 37122A3,  Half Moon Bay (429B) 37122D4,  San Francisco South (448B) 37122F4,  Oakland East (465C)* 37122G2,  San Francisco North (466C)* 37122G4,  Oakland West (466D)* 37122G3,  Point Bonita (467D)* 37122G5,  Drakes Bay (485C)* 38122A8
  • Notes:
      Definitions of codes preceding a county and/or quad:
      * Presumed extirpated
      ? Uncertain about distribution or identity
      ?* Uncertain about distribution, but presumed extirpated if once present
      (?) Occurrence confirmed, but possibly extirpated
      Species may be present in other areas where conditions are favorable.
Presumed Extant Presumed Extirpated or Unknown 910
Links to Leading Resources of Taxon Information
Suggested Citation
CNPS, Rare Plant Program. . Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society, Sacramento, CA. Website http://www.rareplants.cnps.org [accessed ].

34120D4=Point Conception (145B) 34120D4;34120F4=Lompoc (170B)* 34120F4;34120F5=Surf (171A) 34120F5;34120E5=Tranquillon Mtn. (171D) 34120E5;34120H5=Guadalupe (196A)* 34120H5;34120H6=Point Sal (196B)* 34120H6;34120G5=Casmalia (196D)* 34120G5;35120A4=Nipomo (220C) 35120A4;35120A5=Oceano (221D) 35120A5;35120C7=Morro Bay South (247D)* 35120C7;35121E1=Cambria (271D) 35121E1;35120G6=San Miguel (293C) 35120G6;36121F6=Salinas (365B) 36121F6;36121E6=Spreckels (365C) 36121E6;36121F7=Marina (366A) 36121F7;36121E8=Monterey (366C)* 36121E8;36121E7=Seaside (366D) 36121E7;36121G6=Prunedale (386C)* 36121G6;36121H7=Watsonville West (387A) 36121H7;36121H8=Soquel (387B)* 36121H8;37122A2=Davenport (408C) 37122A2;37122A1=Felton (408D) 37122A1;37122A3=Ano Nuevo (409D) 37122A3;37122D4=Half Moon Bay (429B) 37122D4;37122F4=San Francisco South (448B) 37122F4;37122G2=Oakland East (465C)* 37122G2;37122G4=San Francisco North (466C)* 37122G4;37122G3=Oakland West (466D)* 37122G3;37122G5=Point Bonita (467D)* 37122G5;38122A8=Drakes Bay (485C)* 38122A8